Finding the Third Proportional to 34,836 and 67,920

Step by Step Solution

1. Step 1: Write the proportion equation
   34,836 : 67,920 = 67,920 : x
2. Step 2: Convert to fraction form
   34,836/67,920 = 67,920/x
3. Step 3: Cross multiply
   34,836x = 67,920 × 67,920
4. Step 4: Simplify right side
   34,836x = 4,613,126,400
5. Step 5: Solve for x
   x = 4,613,126,400/34,836
6. Step 6: Final answer
   x = 132,424.11